Transportation device for steam turbine rotor

Abstract

The invention discloses a transportation device for a steam turbine rotor, and belongs to the technical field of steam turbine transportation. The transportation device for the steam turbine rotor comprises a connecting frame, a clamping component, a protection mechanism and an auxiliary mechanism; a closed space for protecting an impeller on the outer wall of the steam turbine rotor is constructed through positioning of the shaft end of the steam turbine rotor and rotating closing of the arc-shaped plates, a single impeller part of the steam turbine rotor is further protected through expansion of the bag body and the fact that the blades are located between the two connecting strips, and through flexible contact of the bag body and the protected part, the impeller part is protected. And liquid stored in the weight box is conveyed to the bag body through the conveying pipe, the weight box carries out dynamic balancing conveying according to the gravity center of the rotor, the situation that in the hoisting and transportation maintaining process, due to the gravity center problem of the steam turbine rotor, a connecting frame connected with a rope inclines can be avoided, and the stability in the transportation process is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of steam turbine transportation, and in particular relates to a transportation device for a steam turbine rotor. Background Art

[0002] The steam turbine rotor consists of the main shaft, impeller or drum, moving blades and couplings and other rotating parts of the steam turbine. It has a complex structure and a large volume, which makes it difficult to transport. When hoisting and transporting the steam turbine rotor, due to the complex structure of the steam turbine rotor, the existing transportation method is mostly to directly bind the two ends of the steam turbine rotor with ropes, and then use a hoisting mechanism to transport the steam turbine rotor. However, in actual operation, the method of directly binding with ropes is prone to detachment due to problems with the center of gravity of the steam turbine rotor or shaking during transportation. At the same time, during transportation, the impeller and other components on the outer wall of the steam turbine rotor are prone to contact and collide with external objects due to operational problems, thereby causing damage to the impeller and other components on the outer wall of the steam turbine rotor. The existing mechanism is difficult to ensure the stability of the steam turbine rotor during hoisting and transportation, and it is difficult to fully protect the steam turbine rotor. In order to avoid the above technical problems, it is necessary to provide a transportation device for the steam turbine rotor to overcome the above defects in the prior art. Summary of the Invention

[0003] The object of the present invention is to provide a transportation device for a steam turbine rotor to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: a transport device for a steam turbine rotor, comprising: A connecting frame, the top of which is fixedly connected to a lifting ring connected to the lifting cable; The clamping parts are slidably arranged on both sides of the bottom of the connecting frame and are used to clamp the two ends of the turbine rotor; A protection mechanism is provided between the two clamping members; The protection mechanism includes protective plates rotatably connected on both sides of the turbine rotor. The two protective plates rotate and close to form a closed space for protecting the impeller on the outer wall of the turbine rotor. Protective components are provided on opposite sides of the two protective plates, and the protective components are abutted against the blades on the outer wall of the turbine rotor to avoid rigid contact between the blades on the outer wall of the turbine rotor and the protective plates, thereby preventing damage to the blades on the outer wall of the turbine rotor due to shaking.

[0005] As a preferred embodiment, the protection component includes a plurality of connecting strips spaced apart on the inner wall of the protective plate, an extension portion is provided between adjacent connecting strips, and an arc-shaped space for protecting the turbine rotor impeller is formed between two connecting strips, and capsules are provided at the extension portion and the connecting strip to protect a single blade.

[0006] As a preferred embodiment, a limiting groove is provided on the surface of the protective plate, and an adjustment component is slidably connected in the limiting groove. The adjustment component is used to adjust the interval between the connecting strips and is suitable for protecting impellers on the outer wall of turbine rotors with intervals of different sizes.

[0007] As a preferred embodiment, both ends of the connecting frame are fixedly connected to fixed seats, the fixed seats are penetrated and connected to a key shaft in a limited sliding manner, the key shaft is penetrated and connected to a connecting block in a horizontal sliding manner, and the connecting block is fixedly connected to the protective plate.

[0008] As a preferred embodiment, the clamping mechanism includes a clamping seat located on the lower surface of the connecting frame, and the surface of the clamping seat is vertically slidably connected to a rack. The rack controls the rotation of two key shafts through the meshing transmission of a gear mechanism to close the protective plate and protect the turbine rotor.

[0009] As a preferred embodiment, a clamping claw is slidably connected to the inner side of the clamping seat, and a positioning block that cooperates with the two clamping claws is fixedly connected to the bottom end of the rack.

[0010] As a preferred embodiment, a connector is fixedly connected to one side of the outer wall of the protective plate, one end of the connector passes through the protective plate and is connected to the capsule on the connecting strip, and the other end of the connector is connected to the counterweight box.

[0011] As a preferred embodiment, the counterweight box is on both sides of the two clamping seats, a delivery pipe is provided between the extension part and the connector, and two connections for liquid delivery, adjustment and balancing are provided at the top of the extension part.

[0012] As a preferred embodiment, the upper surface of the clamping seat is fixedly connected to a connecting seat, the upper surface of the connecting frame is provided with a sliding groove corresponding to the connecting seat, and the lower surface of the connecting frame is provided with a guide rail that passes through the clamping seat and is horizontally slidably connected to the clamping seat.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a clamping component and a protection mechanism to clamp the two ends of the steam turbine rotor and cooperate with the protection mechanism. The protection component on the inner side of the protection plate fully protects the impeller and other components on the steam turbine rotor. By positioning the shaft end of the steam turbine rotor and rotating and closing the arc plate, a closed space is constructed to protect the impeller on the outer wall of the steam turbine rotor, thereby achieving protection of the steam turbine rotor. When the rack and the positioning block are moved vertically downward to initially fix the steam turbine rotor, the two protective plates are closed to protect the impeller on the outer wall of the steam turbine rotor. The bladder expands and the blades are located between the two connecting bars to further protect the individual impeller components of the steam turbine rotor. The flexible contact between the bladder and the protection portion can prevent shaking during transportation, which may cause damage to the components on the outer wall of the steam turbine rotor. During hoisting, the present invention adjusts the counterweight by real-time monitoring of the overall horizontality. If one end of the clamping component bears more weight than the other end and tilts, the heavier end will transport the liquid in the corresponding counterweight box into the bladder. While protecting the impeller on the outer wall of the turbine rotor and other components, it can perform dynamic balancing according to the center of gravity of the rotor, so that the force at both ends of the clamping seat is balanced, thereby ensuring stability during hoisting and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of the three-dimensional structure of the present invention Figure 1 ; Figure 2 Schematic diagram of the three-dimensional structure of the present invention Figure 2 ; Figure 3 This is a schematic diagram of the structure of the present invention from a top view; Figure 4 This is a schematic diagram of the structure of the clamping component of the present invention; Figure 5 This is a schematic diagram of the protection mechanism structure of the present invention; Figure 6 This is a schematic diagram of the protective plate structure of the present invention; Figure 7 This is a schematic diagram of the protection component structure of the present invention.

[0015] In the figure: 1. Connecting frame; 2. Protective plate; 3. Clamping seat; 4. Counterweight box; 5. Conveying pipe; 6. Connecting seat; 7. Fixed seat; 8. Clamping claw; 9. Positioning block; 10. Sliding groove; 11. Lifting ring; 12. Connecting block; 13. Protective assembly; 14. Extension part; 15. Connecting strip; 16. Rack; 17. Connecting head; 18. Key shaft; 19. Limiting groove; 20. Adjustment assembly. DETAILED DESCRIPTION

[0016] The present invention will be further described below with reference to the embodiments.

[0017] The following examples are intended to illustrate the present invention but are not intended to limit the scope of protection of the present invention. The conditions in the examples may be further adjusted according to specific conditions. Simple improvements to the method of the present invention within the scope of the present invention are also within the scope of protection claimed in the present invention.

[0018] See also Figure 1-Figure 7 The application provides a transportation device for a steam turbine rotor, characterized by comprising: A connecting frame 1 is fixedly connected with a lifting ring 11 connected with a lifting cable at the top end, and is hoisted and carried by a crane through a rope; The clamping parts are slidably arranged at the bottom of the connecting frame 1 and are used for clamping the two ends of the steam turbine rotor, compared with the prior art of directly hoisting by a rope, which is easy to slide off and difficult to protect the steam turbine rotor outside during carrying; The protection mechanism is arranged between the two clamping parts, and the protection mechanism comprises protective plates 2 rotatably connected on both sides of the steam turbine rotor, and the two protective plates 2 are rotatably closed to form a closed space for protecting the impeller outside the steam turbine rotor, so that collision caused by operation error is prevented, and damage to the impeller and other components outside the steam turbine rotor is caused; Protection assemblies 13 are arranged on the opposite sides of the two protective plates 2, and the protection assemblies 13 abut against the blades outside the steam turbine rotor, so that the blades outside the steam turbine rotor are prevented from being in rigid contact with the protective plates 2, and damage caused by the collision between the blades outside the steam turbine rotor and the protective plates 2 due to shaking during carrying is prevented.

[0019] As shown in Figure 5 The protection assembly 13 comprises a plurality of connecting strips 15 arranged at the inner wall of the protective plate 2, the connecting strips 15 are horizontally slidably connected with the inner wall of the protective plate 2, a stretching part 14 is arranged between adjacent connecting strips 15, the stretching part 14 is made of high-elasticity silica gel or thermoplastic polyurethane material, the buffer layer is allowed to freely stretch and contract when the connecting strips move, stretching and breaking are avoided, an arc-shaped space for protecting the impeller of the steam turbine rotor is formed between the two connecting strips 15, a capsule is arranged at each of the stretching part 14 and the connecting strip 15, a double-layer capsule structure is adopted, water is stored in the inner layer TPU, and the outer layer aramid fiber prevents puncture, the flexible connecting strip 15 and the stretching part 14 form an arc-shaped buffer layer, the arc-shaped buffer layer is adapted to the profile of the impeller, rigid contact is reduced, water source is supplied into the capsule, and a wear-resistant layer is arranged on the outer wall of the capsule to prevent damage of the capsule caused by shaking and friction.

[0020] As shown in Figure 6 A limiting groove 19 is formed in the surface of the protective plate 2, and an adjusting assembly 20 is slidably connected in the limiting groove 19, the adjusting assembly 20 is used for adjusting the interval between the connecting strips 15, the adjusting assembly 20 protects a screw rod fixedly connected with the connecting strip 15, the adjusting assembly 20 slides horizontally along the inner wall of the protective plate 2, the position of the connecting strip 15 is fixed by rotating a nut, so that the distance between the two connecting strips 15 is adjusted, and the stretching part 14 can extend with the movement of the connecting block 12, and is suitable for protecting the impeller outside the steam turbine rotor with different sizes.

[0021] As shown in Figure 5As shown, both ends of the connecting frame 1 are fixedly connected with a fixing seat 7, the fixing seat 7 is penetrated and limitedly slidably connected with a key shaft 18, the key shaft 18 is penetrated and horizontally slidably connected with a connecting block 12, the connecting block 12 is fixedly connected to the protective plate 2, and the key shaft 18 and the connecting block 12 are matched by setting. Since the impeller positions of different steam turbine rotors may differ greatly, the position of the connecting block 12 is fixed by a positioning screw, and the position of the connecting block 12 on the key shaft 18 is adjusted to adjust the position of the protective plate 2, so that the protective plate 2 can be adjusted to the position of the impeller and other components on different types of steam turbine rotors.

[0022] like Figure 4 As shown, the clamping mechanism includes a clamping seat 3 located on the lower surface of the connecting frame 1. A rack 16 is vertically slidably connected to the surface of the clamping seat 3. The rack 16 controls the rotation of two key shafts 18 through the meshing transmission of the gear mechanism to close the protective plate 2 to seal and protect the turbine rotor. A clamping jaw 8 is slidably connected to the inner side of the clamping seat 3, and a positioning block 9 that cooperates with the two clamping jaws 8 is fixedly connected to the bottom end of the rack 16. The clamping jaw 8 moves in the horizontal direction to clamp the end of the turbine rotor. The rack 16 cooperates with the clamping jaw 8 to assist in positioning the outer wall of the turbine rotor shaft end near the top to prevent the turbine rotor from moving easily during transportation. Specifically, two limiting rods are fixed on the inner wall of the clamping seat 3, and the limiting rods pass through the clamping jaws 8 to limit them. Screws are provided between the limiting rods, and a driving component is provided on the outer wall of the clamping seat 3. The driving component includes a servo motor that drives the screw to rotate, so that the clamping jaws 8 can be clamped. The ends of the two clamping jaws 8 are staggered to ensure that the turbine rotor is clamped. The gear mechanism includes two sets of gears 1 and 2 located on both sides of the rack 16. The key shaft 18 passes through gear 2 and is coaxially fixed to gear 2. Gear 1 and gear 2 are meshed, and the rack 16 is meshed with gear 1. When the rack 16 and the positioning block 9 move vertically downward to initially fix the turbine rotor, the two protective plates 2 close to complete the protection of the impeller on the outer wall of the turbine rotor.

[0023] like Figure 5 As shown, a connector 17 is fixedly connected to one side of the outer wall of the protective plate 2. One end of the connector 17 passes through the protective plate 2 and is connected to the bladder on the connecting strip 15. The other end of the connector 17 is connected to the extension portion 14, which is convenient for controlling the discharge and injection of liquid in the bladder and for releasing the protection of the turbine rotor.

[0024] The extension part 14 is on both sides of the two clamping seats 3. A delivery pipe 5 is provided between the extension part 14 and the connector 17. The delivery pipe 5 is a hose, which is convenient for adjustment according to the position of the protective plate 2. The top of the extension part 14 is provided with two connection ports for liquid delivery and adjustment balancing. When hoisting, the counterweight is adjusted by real-time monitoring of the overall horizontality. If one end of the clamping component is greater than the load-bearing end of the other end and tilts, the heavier end will transport the liquid in the corresponding counterweight box 4 into the capsule through the delivery pipe 5, thereby performing dynamic balancing according to the center of gravity of the rotor, so that the force at both ends of the clamping seat 3 is balanced, and stability during hoisting and transportation is ensured; The two connection ports on the top of the counterweight box 4 are used to connect to the external delivery end and storage end, so as to control the liquid storage amount in the counterweight box 4, and transport it through the delivery pump 2, so that the counterweight box 4 on the clamping component is transported to the counterweight box 4 of the clamping component at the other end. Through the input or output of the liquid in the counterweight box 4, the dynamic balancing of the rotor center of gravity can be further assisted.

[0025] like Figure 3 As shown, the upper surface of the clamping seat 3 is fixedly connected to the connecting seat 6, the upper surface of the connecting frame 1 is provided with a sliding groove 10 corresponding to the connecting seat 6, and the lower surface of the connecting frame 1 is provided with a guide rail that passes through the clamping seat 3 and is horizontally slidably connected to the clamping seat 3, ensuring that the clamping seat 3 slides stably on the lower surface of the connecting frame 1. The distance between the two clamping seats 3 can be adjusted to adapt to the operation of turbine rotors of different sizes; A rotating disk is provided on the upper surface of the connecting frame 1, and the rotating disk is movably connected to two centrally symmetrical movable rods through a rotating shaft. The end of the movable rod away from the rotating disk is movably connected to the connecting seat 6. A hydraulic rod for pushing the rotating disk to rotate is movably connected to the upper surface of the connecting frame 1. The telescopic section end of the hydraulic rod is movably connected to the rotating disk. Starting the hydraulic rod can push the rotating disk to rotate, and the rotating disk deflects and pulls or pushes the two connecting seats 6 to move, thereby adjusting the distance between the two clamping seats 3, which is suitable for clamping turbine rotors of different sizes.

[0026] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A transport device for a steam turbine rotor, characterized in that: include: A connecting frame (1), the top of the connecting frame (1) is fixedly connected to a lifting ring (11) connected to the lifting cable; Clamping components are slidably arranged on both sides of the bottom of the connecting frame (1) and are used to clamp the two ends of the turbine rotor; A protection mechanism is provided between the two clamping members; The protection mechanism comprises protection plates (2) rotatably connected on both sides of the steam turbine rotor, the two protection plates (2) being rotated and closed to form a closed space for protecting the impeller on the outer wall of the steam turbine rotor, protection components (13) being provided on opposite sides of the two protection plates (2), and the protection components (13) being in contact with the blades on the outer wall of the steam turbine rotor, thereby avoiding rigid contact between the blades on the outer wall of the steam turbine rotor and the protection plates (2), and preventing damage to the blades on the outer wall of the steam turbine rotor due to shaking.

2. The transport device for a steam turbine rotor according to claim 1, characterized in that: The protection assembly (13) comprises a plurality of connecting strips (15) arranged at intervals on the inner wall of the protective plate (2), an extension portion (14) being provided between adjacent connecting strips (15), an arc-shaped space for protecting the turbine rotor impeller being formed between two connecting strips (15), and capsules being provided at both the extension portion (14) and the connecting strip (15) to protect a single blade.

3. The transport device for a steam turbine rotor according to claim 1, characterized in that: A limiting groove (19) is provided on the surface of the protective plate (2), and an adjustment component (20) is slidably connected in the limiting groove (19). The adjustment component (20) is used to adjust the interval between the connecting strips (15) and is suitable for protecting turbine rotor outer wall impellers with intervals of different sizes.

4. The transport device for a steam turbine rotor according to claim 3, characterized in that: Both ends of the connecting frame (1) are fixedly connected to fixing seats (7), the fixing seats (7) are penetrated and limitedly slidably connected to a key shaft (18), the key shaft (18) is penetrated and horizontally slidably connected to a connecting block (12), and the connecting block (12) is fixedly connected to the protective plate (2).

5. The transport device for a steam turbine rotor according to claim 3, characterized in that: The clamping mechanism comprises a clamping seat (3) located on the lower surface of the connecting frame (1); a rack (16) is vertically slidably connected to the surface of the clamping seat (3); the rack (16) controls the rotation of two key shafts (18) through the meshing transmission of a gear mechanism to close the protective plate (2) and protect the turbine rotor.

6. The transport device for a steam turbine rotor according to claim 5, characterized in that: The inner side of the clamping seat (3) is slidably connected to a clamping claw (8), and the bottom end of the rack (16) is fixedly connected to a positioning block (9) that cooperates with the two clamping claws (8).

7. The transport device for a steam turbine rotor according to claim 2, characterized in that: A connector (17) is fixedly connected to one side of the outer wall of the protective plate (2), one end of the connector (17) passes through the protective plate (2) and is connected to the capsule on the connecting strip (15), and the other end of the connector (17) is in communication with the counterweight box (4).

8. The transport device for a steam turbine rotor according to claim 7, characterized in that: The counterweight box (4) is located on both sides of the two clamping seats (3), and a delivery pipe (5) is provided between the extension portion (14) and the connector (17). The top end of the extension portion (14) is provided with two connections for liquid delivery, adjustment and balancing.

9. The transport device for a steam turbine rotor according to claim 5, characterized in that: The upper surface of the clamping seat (3) is fixedly connected to a connecting seat (6), the upper surface of the connecting frame (1) is provided with a sliding groove (10) corresponding to the connecting seat (6), and the lower surface of the connecting frame (1) is provided with a guide rail that passes through the clamping seat (3) and is horizontally slidably connected to the clamping seat (3).

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